Rubber substitute.



ran snares PATENT OFFIGE.

Y HERMAN Maren: or usw roan, n. Y.

Runner. suesrrrn'rn.

To all whom it may concern:

Be it known that I, HERMAN MAYER, a citizen of the United States, and aresident of the borough of Manhattan, city, county, and State of NewYork, have invented a certain new and useful Rubber Substitute, of whichthe following is a specification.

.The object of my invention is the production of a relatively insolubleelastic resilient composition of matter adapted to various purposes anduses as hereinafter set forth.

What may be designated as the basi' or determining ingredient of mycomposition is a predominating quantity of vegetable oil to whichmagnesia is added as a filler or cohesive to roduce a semi-solidsubstance which may be diluted more less by means of a volatilepetroleum oil or the like prior to its treatment with chlorid of sulfurfor the purpose of effecting the requisite degree of solidification ofthe product according to the purpose for which it isdesignedformaldeliyde being used under certain conditions for thepurpose of retarding the setting of the composition. By this means Iattain a compound which is pract-ically'insoluble under ordinaryconditions of use, and which is elastic and resilient, like untocaoutchouc and the compounds and variations thereof, known commerciallyas rubher, for which my composition may be substituted, in whole or inpart, for numerous purposes.

Byv varying the proportions of the component parts thereof I canmaterially modify the character of my composition without departing fromthe essential features ofmy invention which consist'primarily inrendering vegetable oil adhesive, coherent and tenacious by means of amagnesia filler, using a volatile petroleum oil or the like as a.diluent, and determining the degree of viscosity, semi-solidity andtoughness of the resultant mass by means of chlorid ofsulfur,-rformaldehyde being incidentally used in some cases as aretardative. Thus, with the understanding that I do not limit myself tothe relative proportions of ingredients herein named by way ofexemplifying the practical application of my invention, the followingformula is given by way of illustrating the production of a tough,viscous, semi-solid composition adapted for various commercial purposes,the named quantitiesof ingredients being small but capable of increasein proportion, according to the amount of composition required.

Specification of heifers Pa e.

Patented Apr. as, 1914.

Application filed April '3, 1913. Serial No. 759,805.

IVhile any vegetable oil,or combination of ve etable oils, may be used,I have attaine desirable results by the'use of, say, one and one halfounces of cottonseed oil mixed with a like quantity of castor oil. Tothis three ounces of vegetable oil I add one sixth of an ounce ofmagnesia, stirred into and thoroughly mixed with the oil. This filler ofmagnesia combines with the vegetable oil to form a viscous adhesive, coerentcompound, which I dilute somewhat by means of volatile petroleumoil or the like such as benzin, kerosene, or the like, an ounce or so ofthe petroleum oil or the like. diluent being stirred into the mass. To

this diluted compound of oil and magnesia I add approximately one thirdof an ounce of chlorid of sulfur in suitable solvent, thoroughly mixingthe ingredients, and then manipulation, as where, the homogeneousadmixture is to be introduced into a mold or envelop before it has timeto set permanentl'y, I mix with the diluted compound of vegetable oiland magnesia preparatory to the introduction of the chlorid of sulfur,approximately one sixteenth of an ounce, of formaldehyd'e,the extent ofretardation effected depending on the quantity of formaldehyde thusintroduced. By this means I am enabled to use my composition efiectivelyas a. filling for rubber tire tubes in lieu of air, producingpractically a semi-solid elastic resilient non-collapsible tire with allof the advantages of a pneumatic tire and without any of thedisadvantages or dangers Castor oil 32 per cent. Cotton seed oil 32 percent. Formaldehyde 3 per cent. Petrol oil 21 per cent. Sulfur chlorid 7per cent. Magnesia; 5 per cent.

By varying the relative proportions of vegetable oil, magnesia andchlorid of sulfur I am enabled to produce a tenacious elastic resilient.basic composition adapted to varione uses in the arts, and as .,asubstitute in many respects for caoutchouc or commercial rubber andsimilar compounds. Thus my composition may be used as basic carrier orvehicle for comminuted emery or other abrasivein the manufacture of'er'asers, and without abrasives as a substitute for artists gum andother forms of relatively soft attractive clear White product; althoughobviously in thisconnection various coloring agents or plgments may bereadily added to the composition as may be found er zpedient in.practice without afiecting its other qualities or functions.

The simplicity and'cheapnessof my composition, its tenacity, flexibilityand resilionce, render it valuable'as a product available as asubstitute for rubber and its various compounds, andfor' numerousothercommercial uses and purposes. Furthermoreit is not affected byordinaryvariations in temperature, will Withstand ordinary extremes ofheat or cold, and is essentially insoluble and non-decomposable I What Icla m as my invention and desire to secure by Letters Patent is,

As a rubber substitute, an elastic re'silient composition of matter ofthe character designated, formed of the following ingredients insubstantially the proportions stated, vizz-eastor oil, thirty-two percent, cotton seed oil thirty-two per cent, formaldehyde three per cent,petrol oil twenty-one per cent, sulfur chlorid seven per cent, and,inagnesia five per cent.

HERMAN MAYER.

lVitnesses GEO; WM. MIATT, LILLIA MIATT.

